Interpretation of Galileo Probe Data and Implications for Jupiter’s Dry Downdrafts

نویسندگان

  • Adam P. Showman
  • Andrew P. Ingersoll
چکیده

column stretching, so that the NH3 , NH4SH, and water lifting condensation levels were pushed to 8, 16, and .20 bars, respecThe Galileo probe found the jovian abundance of H2S to be tively. In either case, the simplest form of this model requires 30% solar at the 8 bar level, while the abundance of water was the downdraft to be less dense than the surroundings from less than 3% solar at 12 bars. From 8 to 20 bars, H2S increased 0.5 to 20 bars. In its simplest form, this model is therefore to three times solar, and water apparently increased as well. incompatible with our favored interpretation of the winds; more Since H2S and water condense at 2 and 5 bars, respectively, detailed studies will be necessary to resolve the problem.  1998 the probe probably entered a dry downdraft, wherein dry air Academic Press above 2 bars is advected to 12 bars or deeper (Owen et al. 1996,

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Carbon Monoxide in Jupiter after Comet Shoemaker–Levy 9

for roughly half the mass. In high-temperature shocks, most of the O is converted to CO (Zahnle and MacLow Observations of the carbon monoxide fundamental vibration–rotation band near 4.7 mm before and after the impacts 1995), making CO one of the more abundant products of of the fragments of Comet Shoemaker–Levy 9 showed no dea large impact. tectable changes in the R5 and R7 lines, with one po...

متن کامل

Peering into Jupiter

Attaining in situ data from planets in our solar system is an extremely difficult undertaking. Decades of planning go into designing missions, and careful consideration is made for what measurements should be made to yield the greatest scientific gain, and to make the cost and risks worthwhile. NASA’s Galileo mission, whose detailed planning began in 1970s, studied the Jovian system from 1995 t...

متن کامل

Structure of the Jovian Stratosphere at the Galileo Probe Entry Site

The structure of the Jovian stratosphere at the Galileo probe entry site is investigated through calculations of radiative heating rates based on measurements of the temperature profile, composition, and aerosol distribution. From analysis of mid-IR observations of Jupiter, we determine a C2H2 mole fraction of 1.1–4.3× 10−6 at 0.01 mbar, and a C2H6 mole fraction of 2.8–6.5× 10−6 at 0.4– 10 mbar...

متن کامل

A New Constraint on the Formation of Jupiter

Data from the mass spectrometer on the Galileo Probe indicate an approximately uniform enrichment (relative to hydrogen) of 3±1 times the solar value for Ar, Kr, Xe, C, S and N on Jupiter. These data also reveal that 15N/14N = 2.3 ± 0.3 × 10−3 in Jupiter’s nitrogen, indicating that this element reached the planet primarily in the form of N2 . These two findings strongly suggest that a disk inst...

متن کامل

Longitude-resolved Imaging of Jupiter at Λ = 2 Cm

We present a technique for creating a longitude-resolved image of Jupiter’s thermal radio emission. The technique has been applied to VLA data taken on 25 January 1996 at a wavelength of 2 cm. A comparison with infrared data shows a good correlation between radio hot spots and the 5 μm hot spots seen on IRTF images. The brightest spot on the radio image is most likely the hot spot through which...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998